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Diffstat (limited to 'actions/twitterauthorization.php')
| -rw-r--r-- | actions/twitterauthorization.php | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/actions/twitterauthorization.php b/actions/twitterauthorization.php new file mode 100644 index 000000000..f19cd7f65 --- /dev/null +++ b/actions/twitterauthorization.php @@ -0,0 +1,136 @@ +<?php +/** + * Laconica, the distributed open-source microblogging tool + * + * Class for doing OAuth authentication against Twitter + * + * PHP version 5 + * + * LICENCE: This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * @category TwitterauthorizationAction + * @package Laconica + * @author Zach Copely <zach@controlyourself.ca> + * @copyright 2009 Control Yourself, Inc. + * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 + * @link http://laconi.ca/ + */ + +if (!defined('LACONICA')) { + exit(1); +} + +class TwitterauthorizationAction extends Action +{ + + function prepare($args) + { + parent::prepare($args); + + $this->oauth_token = $this->arg('oauth_token'); + + return true; + } + + function handle($args) + { + parent::handle($args); + + if (!common_logged_in()) { + $this->clientError(_('Not logged in.'), 403); + } + + $user = common_current_user(); + $flink = Foreign_link::getByUserID($user->id, TWITTER_SERVICE); + + // If there's already a foreign link record, it means we already + // have an access token, and this is unecessary. So go back. + + if (isset($flink)) { + common_redirect(common_local_url('twittersettings')); + } + + // $this->oauth_token is only populated once Twitter authorizes our + // request token. If it's empty we're at the beginning of the auth + // process + + if (empty($this->oauth_token)) { + + // Get a new request token and authorize it + + $client = new TwitterOAuthClient(); + $req_tok = $client->getRequestToken(); + + // Sock the request token away in the session temporarily + + $_SESSION['twitter_request_token'] = $req_tok->key; + $_SESSION['twitter_request_token_secret'] = $req_tok->key; + + $auth_link = $client->getAuthorizeLink($req_tok); + common_redirect($auth_link); + + } else { + + // Check to make sure Twitter sent us the same request token we sent + + if ($_SESSION['twitter_request_token'] != $this->oauth_token) { + $this->serverError(_('Couldn\'t link your Twitter account.')); + } + + $client = new TwitterOAuthClient($_SESSION['twitter_request_token'], + $_SESSION['twitter_request_token_secret']); + + // Exchange the request token for an access token + + $atok = $client->getAccessToken(); + + // Save the access token and Twitter user info + + $client = new TwitterOAuthClient($atok->key, $atok->secret); + + $twitter_user = $client->verify_credentials(); + + $user = common_current_user(); + + $flink = new Foreign_link(); + + $flink->user_id = $user->id; + $flink->foreign_id = $twitter_user->id; + $flink->service = TWITTER_SERVICE; + $flink->token = $atok->key; + $flink->credentials = $atok->secret; + $flink->created = common_sql_now(); + + $flink->set_flags(true, false, false, false); + + $flink_id = $flink->insert(); + + if (empty($flink_id)) { + common_log_db_error($flink, 'INSERT', __FILE__); + $this->serverError(_('Couldn\'t link your Twitter account.')); + } + + save_twitter_user($twitter_user->id, $twitter_user->screen_name); + + // clean up the the mess we made in the session + + unset($_SESSION['twitter_request_token']); + unset($_SESSION['twitter_request_token_secret']); + + common_redirect(common_local_url('twittersettings')); + } + } + +} + |